Inspection System And Method For Analysing Defects

1. A method for analysing defects in transformer laminations with an inspection system, wherein the inspection system comprises a detection unit including an optical detecting device arranged transversely to a direction of movement of a transformer lamination, a measurement device including a position and/or distance device placed before the detecting device in the direction of movement and a position and/or distance device placed after the detecting device in the direction of movement, a conveyance device, and a processing device, comprising the steps of: continuously transporting a plurality of transformer laminations relative to the optical detecting device; measuring a velocity of movement of at least one of the plurality of transformer laminations relative to the optical detecting device via the measurement device of the detection unit; measuring a distance of completed movement and/or the velocity of movement of the at least one of the plurality of transformer laminations directly at the transformer lamination with the optical detecting device; capturing an image of a contour of the at least one of the plurality of transformer laminations with the optical detecting device; assembling images of the at least one of the plurality of transformer laminations into a combined image of the transformer lamination via the processing device while considering the velocity of movement of the transformer lamination; determining a shape of the at least one of the plurality of transformer laminations on the basis of the combined image and a difference between a velocity of movement measured at one end of the at least one of the plurality of transformer laminations and a velocity of movement measured at an opposite end of the at least one of the plurality of transformer laminations via the processing device; and using the processor to process measurement data from the position sensor and/or distance sensor placed before the detecting device in the direction of movement and subsequently from the position sensor and/or distance sensor placed after the detecting device in the direction of movement.

2. The method according to claim 1 , further comprising the step of using image processing to determine a dimension and/or a contour of the at least one of the plurality of transformer laminations on the basis of the combined image.

3. The method according to claim 1 , further comprising the step of using the processor to associate the captured image with a position of the at least one of the plurality of transformer laminations measured by the measurement device in the direction of movement relative to the detecting device at a capture time.

4. The method according to claim 3 , further comprising the step of using the processor to store an image data set of the image and a measurement data set of the position in a component data set of the at least one of the plurality of transformer laminations.

5. The method according to claim 4 , further comprising the step of using the processor to allocate a consistent time stamp to the image data set of the image and the measurement data set of the position.

6. The method according to claim 4 , further comprising the step of using the processor to detect an individual optical marker of the at least one of the plurality of transformer laminations within the image data set of the image and can assigning the individual optical marker to the component data set.

7. The method according to claim 1 , further comprising the step of using the processor to determine a placement sequence for the plurality of transformer laminations for producing a transformer core on the basis of the shapes of the plurality of transformer laminations.

8. The method according to claim 1 , wherein the step of determining the shape further comprises measuring a temperature of the at least one of the plurality of transformer laminations and/or the conveyance device and considering the temperature of the at least one of the plurality of transformer laminations and/or the conveyance device along with a respective expansion coefficient.

9. The method according to claim 1 , wherein the step of determining the shape further comprises measuring a belt tension and/or a friction coefficient of a conveyor belt of the conveyance device.

10. The method according to claim 1 , further comprising the step of calibrating the inspection system via an inspection of a transformer lamination with a known shape.

11. The method according to claim 1 , wherein the step of determining the shape further comprises considering a time of a change of the velocity of movement.

12. An inspection system for analysing defects in transformer laminations, wherein the inspection system comprises a detection unit, a conveyance device, a measuring device including a position sensor and/or a distance sensor placed before the detection unit in the direction of movement and a position sensor and/or a distance sensor placed after the detecting device in the direction of movement, and a processing device, wherein the detection unit includes an optical detecting device, wherein the conveyance device is used to continuously transport a plurality of transformer laminations relative to the detecting device, wherein the detecting device is arranged transversely to a direction of movement of the plurality of transformer laminations, wherein a velocity of movement of at least one of the plurality of transformer lamination relative to the detecting device is measured via a measurement device of the detection unit, the measurement device measures a distance of completed movement and/or the velocity of movement of the at least one of the plurality of transformer laminations directly at the at least one of the plurality of transformer laminations with the optical detecting device, an image of a contour of the at least one of the plurality of transformer laminations is captured with the detecting device, images of the at least one of the plurality of transformer laminations are assembled into a combined image of the at least one of the plurality of transformer laminations via the processing device while considering the velocity of movement of the at least one of the plurality of transformer laminations, a shape of the at least one of the plurality of transformer laminations is determined on the basis of the combined image and a difference between a velocity of movement measured at one end of the at least one of the plurality of transformer laminations and a velocity of movement measured at an opposite end of the at least one of the plurality of transformer laminations via the processing device, and measurement data from the position sensor and/or the distance sensor placed before the detecting device in the direction of movement and subsequently from a position sensor and/or distance sensor placed after the detecting device in the direction of movement is processed by the processing device.

13. The inspection system according to claim 12 , wherein the optical detecting device includes a line scan camera, wherein a line scan image of the contour of the at least one of the plurality of transformer laminations can be captured with the line scan camera.

14. The inspection system according to claim 12 , wherein the optical detecting device includes a projection device, wherein the projection device can be designed as a lighting device, which can be used to project light onto the at least one of the plurality of transformer laminations.

15. The inspection system according claim 12 , the conveyance device is designed with one conveyor belt, two conveyor belts or with transport trolleys.

16. The inspection system according to claim 15 , wherein the measurement device is configured to measure a position, a distance of completed movement and/or a transport velocity of the conveyor belt or the transport trolley.

17. The inspection system according to claim 15 , wherein the conveyor belt is designed with magnets for increasing a friction coefficient of the conveyor belt.

18. The inspection system according to claim 15 , wherein the conveyor belt is designed with a gearing, which can engage with a drive wheel of the conveyor belt.

19. The inspection system according to claim 15 , wherein the conveyor belt includes a centring device for aligning the plurality of transformer laminations on the conveyor belt.

20. The inspection system according to claim 15 , wherein the transport trolleys are designed with vacuum cups and/or magnets for holding the plurality of transformer laminations, wherein the transport trolleys can be moveable via a linear drive of the conveyance device.

21. The inspection system according to claim 12 , wherein the measurement device includes a temperature sensor for detecting a temperature of the at least one of the plurality of transformer laminations and/or the conveyance device.

22. The inspection system according to claim 12 , wherein the detecting device is arranged orthogonally to a direction of movement of the plurality of transformer laminations.